I would've really grateful for help with the last three answers in the crossword; 18a journey doesn't end in defeat ??U? (cryptic)
12d picture B ?U?K?A?
45d like seabird at the back ?S?E?N. (cryptic)
Thank you so much for all the answers, much appreciated. I thought the picture might be of Gurkhas but it was so small I began to doubt my first thoughts.